When the product is redesigned mid-dispute: what it costs to be wrong
Redesigning a product while a patent dispute is open does not pause the clock and does not close the case. The forum already seized of the dispute examines the new version on its own merits. A wrong guess about non-infringement adds a second set of damages, a second injunction risk, and, if the goods have already shipped, a border seizure under the applicable enforcement regulation. Being wrong is cumulative, not correctable after the fact.
Basis: which forum decides, and on what scope
Where the patent in dispute is a unitary patent, the forum for any question raised by a redesign is fixed by the Agreement on a Unified Patent Court. The scope of protection that a redesign has to clear is set by Regulation (EU) No 1257/2012, which defines what a unitary patent covers across the participating states. Where the wording of the claims matters to how the redesign is read, Council Regulation (EU) No 1260/2012 governs the applicable translation arrangements for that patent. If the redesigned goods are already moving across a border, Regulation (EU) No 608/2013 gives customs authorities a separate basis to detain them on suspicion of infringement, independent of how the litigation itself proceeds.
These four instruments do not overlap by accident. A single redesign decided mid-dispute can trigger a forum question under the Agreement on a Unified Patent Court, a scope question under Regulation (EU) No 1257/2012, a translation question under Council Regulation (EU) No 1260/2012, and a customs question under Regulation (EU) No 608/2013 — each running on its own timetable, and none of them waiting for the others to finish.
What changes in deadlines and risk
The deadline already running in the original proceeding does not restart because the product changed. A response deadline, a counterclaim window, or a deadline to file evidence continues to run against the original version, regardless of when the redesign entered the market. A second clock starts the moment the new version ships: a right holder who considers it still infringing can file a fresh claim, or ask the same forum to extend the existing one to cover it.
If the redesign is wrong — meaning the new version still falls within the scope of the claims — the new exposure does not replace the old one, it adds to it. Damages can be assessed for both versions of the product. An injunction sought against the original design can be extended to the redesign, and a forum that already doubts the good faith of one design change tends to review the second one with less patience than the first.
What to do, in order
- Freeze the decision record. Whoever approves the redesign should set out, before the product ships, why the change was believed to fall outside the existing claims.
- Run a fresh clearance check on the new version, not the old one. An opinion written for the original product does not cover a different design, however close the two look.
- Tell the forum handling the existing dispute that a redesign exists, rather than letting the other side raise it during disclosure.
- Keep the customs risk separate from the litigation risk. A product can pass a claim-construction test in the dispute and still be detained at a border under Regulation (EU) No 608/2013 if a right holder has an application for action on file.
- Do not suspend the original proceeding on the assumption that redesigning resolves it. Withdrawal or settlement is a distinct procedural step; silence in the meantime is read as continued defence of the original position.
Who decides, and on what evidence
For a unitary patent, the panel constituted under the Agreement on a Unified Patent Court decides both the original claim and, where it is raised, the status of the redesign — on a technical comparison between the claims and the new product, not on the intent behind the change. The team assembled for a file of this kind is built the same way any technical dispute team is built here; the process is set out in How the team hires in detail.
| Question | Decided by | Basis |
|---|---|---|
| Does the redesign still infringe | Forum already seized of the original dispute | Technical comparison against the claims |
| Does the unitary patent cover the redesign at all | Same forum, scope question | Regulation (EU) No 1257/2012 |
| Can the redesigned goods be detained at a border | Customs authority, on application | Regulation (EU) No 608/2013 |
If your situation differs
If the dispute is not about the patent itself but about who owns the code behind the redesign — for instance, a contractor built the new version — that question is decided separately from the patent claim: When a contractor claims ownership of the code and when.
If the product line also carries a tokenised component and a marketplace removes the listing while the dispute is open, the forum and the timetable are different again: When a marketplace delists the collection and its limits.
What this page does not decide
This page does not replace a clearance opinion on the redesigned product, and it does not set the translation requirements for a specific set of claims — those depend on which states are participating. It also does not cover the commercial check a distributor of the redesigned product may need before agreeing to carry it; where onboarding is under way and a counterparty check is needed against a running deadline, that sits in the product layer: Counterparty report before onboarding a distributor and the deadline.
Related situations
A redesign is often paired with a separate fight over the size of the claim itself: When damages are demanded without evidence: what it costs.
Verified
Checked against: Agreement on a Unified Patent Court; Regulation (EU) No 1257/2012; Council Regulation (EU) No 1260/2012; Regulation (EU) No 608/2013. Date of last check is stated in this page's metadata.
Frequently asked
What is the first step when the product is redesigned mid-dispute?
Document, before the redesign ships, why the change was believed to fall outside the claims already in dispute. That record is the first thing a forum reviews if the redesign is later challenged.
Which deadline is already running?
The deadline attached to the original proceeding — a response, a counterclaim window, or an evidence filing — keeps running against the original product. The redesign does not stop it or restart it.
Who decides, and on what evidence?
The forum already seized of the dispute decides, on a technical comparison between the patent claims and the redesigned product, not on the reasons behind the change or the intent of the party that made it.